The former Motherwell, Leicester, Liverpool, Coventry and Scotland international, available at 80/1 with Skybet late last month, is now favourite after sustained market support.
Hills go 7/2 with current caretaker boss John Carver, who admits his chances of landing the job full-time may have gone after Leeds' abysmal 4-0 home drubbing to Stoke yesterday.
Former England boss and one-time favourite Glenn Hoddle is now out to 7/2, while former Chelsea player Dennis Wise is 4/1 with Graeme Souness at 9s.
Alan Curbishley is a general 10/1 bet.